#Question id: 26936
#Unit 10. Ecological Principles
If fitness differences are greater than niche differences, then species with
#Question id: 1259
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to the phosphoinositide pathway.
A. many activated RTKs and cytokine receptors initiate phosphoinositide pathway by recruiting the enzyme phosphatidylinositol-3 kinase (PI-3 kinase) to the membrane.
B. PI-3 kinase adds a phosphate to the 3′ carbon in one of two separate phosphatidylinositol substrates, leading to formation of two phosphatidylinositol 3-phosphates: PI(3,4)P2 or I(3,4,5)P3
C. PI-3 kinase pathway can trigger cell division and prevent apoptosis, thus ensuring cell survival by the activation of PKB.
D. Activated PKB phosphorylates FOXO3a, which induces the expression of several antiapoptotic genes.
Which of the following combination is correct?
#Question id: 808
#Unit 1. Molecules and their Interaction Relevant to Biology
Which, if any, of the following statements is false?
#Question id: 10511
#Unit 6. System Physiology – Plant
Which type of pumps inhibits digitoxin in the membranes of heart cells, leading to increased myocardial contraction?
#Question id: 11934
#Unit 7. System Physiology – Animal
Which of the following represents the basis for transduction of a sensory stimulus into nerve impulses?